I'm doing my first brush restoration and have questions. I got the old bristles out of this brush fairly easily. Inside it looks like there is Plaster of Paris. I believe that water got to it at one point as the bottom plate was pushed out a little. I tried to remove the bottom plate to sand down the swell but the bottom plate broke. Inside the bottom I found this:
It looks looks there are small wood chips in with the Plaster of Paris.
This is the view from the top. The damage around the edge is not from me and the line in the lower left quadrant is a seam, not a crack.
My questions are this. Would you go ahead and remove the Plaster of Paris and refill totally with epoxy and a weight of some type or just seal it at the top with epoxy? Also, can you get really thin plastic to make a new bottom plate at Hobby Lobby or Michaels? If the consensus is to remove the Plaster of Paris, should I drill through it first before I soak it to give it room to expand and not break the handle?
I have step by step pictures of this restoration that I will post when the brush is done.